
Appendix
A-2
A.1.2
Bit / Word memory device ( timer & counter )
The timer and counter memory area consist of 3 parts - the output bit, current value word, and setting
value word. When the T or C device is used as a operand of bit instruction, the instruction takes effect to
the output bit of timer or counter. If the T or C device is used as an operand of word instruction, the current
value word is effected by the instruction. The setting value can not be changed by user.
A.1.3
Word memory device
The D device used by word. Therefore, the D device can not be used as an operand of bit instruction such
as LOAD, OUT, etc. To control the D device by bit, use special instructions such as BLD, BAND, BOR, etc.
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
D0000
D0001
D0002
D0003
Dnnnn
= D0002